Reply to comments on the paper "Solubilization of a water-insoluble dye as a method for determining micellar molecular weights," and remarks on molecular weight determination of charged micelles by light scattering

1968 ◽  
Vol 72 (1) ◽  
pp. 380-382 ◽  
Author(s):  
Hans Schott
Keyword(s):  
Molecular Weight ◽  
Light Scattering ◽  
Molecular Weight Determination ◽  
Molecular Weights

scholarly journals A High Temperature Light Scattering; Molecular Weight Determination of Poly(phenylene sulphide)

1993 ◽  
Vol 25 (3) ◽  
pp. 301-307 ◽  
Author(s):  
Masahiro Obasa ◽  
Hirokazu Nakamura ◽  
Masami Takasaka ◽  
Tadaya Kato ◽  
Mitsuru Nagasawa
Keyword(s):  
Molecular Weight ◽  
High Temperature ◽  
Light Scattering ◽  
Molecular Weight Determination

Determination of Copolymer Molecular Weight

1968 ◽  
Vol 41 (1) ◽  
pp. 245-253 ◽  
Author(s):  
Paul Rempp ◽  
Henri Benoit
Keyword(s):  
Molecular Weight ◽  
Light Scattering ◽  
Density Gradient ◽  
Compositional Heterogeneity ◽  
Precise Information ◽  
Molecular Weights ◽  
Molecular Weight Distributions ◽  
Weight Distributions ◽  
Binary Copolymers

Abstract From this brief review it appears that determinations of molecular weight averages, of molecular weight distributions, and of compositional inhomogeneity of binary copolymers, require care in the choice of techniques and methods. Some of the most commonly used techniques for molecular weight determinations on homopolymers of various kinds are inadequate for the same determinations on copolymers. Others are more sensitive to fluctuations in composition than in molecular weights. Osmotic methods are the only one which are really insensitive to inhomogeneity, and which yield molecular weights. Ultracentrifugation in a density gradient yields precise information only on fluctuations in composition. Viscosity determinations require calibration, but even so, they may lead to erroneous values of the molecular weight in the case of copolymers. GPC is less sensitive to compositional heterogeneity, but cannot be applied for nonlinear copolymers. Finally, light scattering is a very powerful tool for studies on copolymers, since it leads to molecular weight averages and its helps characterize polydispersity and fluctuations in composition.

Molecular weight determination of macromolecules with a new simplified and coherent light scattering method

1998 ◽  
Vol 443 (1-3) ◽  
pp. 233-253 ◽  
Author(s):  
M. Beignon ◽  
S. Bohic ◽  
M. Le Guennec ◽  
D. Le Goff ◽  
P. Roger ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Light Scattering ◽  
Scattering Method ◽  
Molecular Weight Determination ◽  
Coherent Light ◽  
Coherent Light Scattering

In situ molecular weight determination of rat brain [3H]phenytoin binding sites

1985 ◽  
Vol 63 (5) ◽  
pp. 515-516 ◽  
Author(s):  
Lawrence Spero
Keyword(s):  
Molecular Weight ◽  
Rat Brain ◽  
Binding Sites ◽  
Molecular Weight Determination ◽  
Lower Affinity ◽  
Molecular Weights

Using irradiation inactivation analysis of specific [3H]phenytoin binding to rat brain we have demonstrated that there are two different binding sites involved, with molecular weights of 73 238 ± 1535 (higher affinity site) and 108 121 ± 6935 (lower affinity site).

Determination of the Molecular Weight of Rubber and Polystyrene by the Methods of Light Scattering and Osmometry

1950 ◽  
Vol 23 (1) ◽  
pp. 89-97
Author(s):  
B. Dogadkin ◽  
I. Soboleva ◽  
M. Arkhangel'skaya
Keyword(s):  
Molecular Weight ◽  
Light Scattering ◽  
Natural Rubber ◽  
Satisfactory Agreement ◽  
Molecular Weights ◽  
Molecular Compounds

Abstract 1. Experiments on the determination of the molecular weights of natural rubber and other high-molecular compounds by the methods of light scattering and osmometry are reported. 2. An osmometer of new design, suitable for determining molecular weights, is described. 3. It is shown that the method of light scattering yields values for molecular weights which are in satisfactory agreement with those obtained by the method of osmometry.

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